In this video, I'll explain how to create an electronic escape room puzzle that requires players to press a series of touch inputs in the correct sequence in order to release a maglock. The inputs are touch sensors which, when the player places their finger on them, play a sound sample of a single syllable. When pressed in the correct order, these syllables make the words of a sentence. The sound files are played by a DFPlayer Mini MP3 module, controlled by an Arduino. When the Arduino detects that the last correct input has been pressed, it activates a relay which closes a circuit, supplying 12V to a maglock which ejects a catch that had previously been held closed.
Unlike similar escape room puzzles, which typically require visual senses of identifying particular symbols or characters on buttons, or following a series of lights, this puzzle relies on sound and auditory senses, which makes it a good complement to other puzzles in an escape room.
Timings
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00:00 - 00:32 Demonstration
00:33 - 03:44 Project Overview
03:45 - 06:32 Component Explanation: Multiplexers and Touch Sensors
06:33 - 17:51 Wiring
17:52 - 34:59 Arduino Code
35:00 - 36:01 Wrapup
Download the Arduino code, wiring diagram, Fritzing project, and additional resources at my Patreon page: https://www.patreon.com/playfultech